Switchable 12V (with ignition)

Hi,

I need to locate a switcable 12v supply (for a dvd player) behind the dashboard. I want it switchable with the ignition so that it can;t be left on by mistake (which I did once and ran the battery flat!).

I can't seem to find an easy to get to 12v connection. Any help graetly appreciated.

On the B5 chassis cars (96-01, which I have) there are power posts under the dash on the driver's side. Your car may also have them. Remove the lower dash panel (the one above your legs when you're driving) and look under there. In my car, there are three power posts with red wires running from them, and one with a yellow wire. The yellow one is switched 12v, and I use it to power my XM Radio head unit. The three red ones are constant 12v, which I have used for my phone charger. See if you have these too - if so, use the yellow and you'll be set.

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Bought a toyota camry for the mileage?? i find this strange to say the least as this is still a big car now if you wanted to reduce the fuel bill then how about a nice peugeot 206 or even a toyota yaris 1.3 diesel but a camry its little more than a juice burner unless its a diesel that is .Anyway your problem with the radio is but do not quote me on this as iam not sure but working from memory as its been at least 10 or more years since i worked on this model and that is the radio has 3 feeds one 12v supply permant for the memory and a 12v switchable ignition feed and finally a 12v supply from the lighting circuit so when the side lights are on the radio lights up and i think this last one you may have used as a earth wire?? ,How about a tesla electric car then covered in solar panels ?? now that my dream and let the arabs drink their oil

fit a battery isolator inside the car under the dash on the battery earth is the cheapest soloution.Or a wiring diagram to trace the wires to locate the fault which i suspect could be on the radio wiring where 2 feeds are used one a permanant 12v feed and one a switchable feed via ignition switch causing a backfeed if done wrong .

have you done the basic check and looked for power to the radio ,their should be 2 feeds a permanant 12v supply for memory and a switchable feed from ignition circuit ,also if the feeds chech out then check the earth

either a fuse or a damaged BCM ,you have to be careful here as sometimes if the feed used is the supply for the auto volume or panel lights you can and will get this problem ,which is why when i fit one i use my own 12v switchable supply from ignition switch that i install

blue /electric aerial
red /live feed
black/earth
yellow /switchable 12v
then the other thinner cables will be the speakers with two wires the same colour but one will have a black stripe through it ,one speaker --- and so on

this is easy to do and you musnt be scared.first find 12v permanent ,then 12v switchable,ground ,ignore electric aerial which is normally blue or yellow use a piece of twin flex connected to battery and flash speakers so you know which is where,good clue is speakers have same coloured wires but one has a black or white flash through it .And away you go music